Waldmann; Helmut
Patent Applications and Registrations
Patent applications and USPTO patent grants for Waldmann; Helmut.The latest application filed is for "process for working up reaction gases during the oxidation hci to chlorine".
- Waldmann; Helmut - Nideggen DE
- Waldmann; Helmut - Leverkusen DE
| Patent | Date |
|---|---|
| Process for working up reaction gases during the oxidation HCI to chlorine Grant 6,387,345 - Gestermann , et al. May 14, 2 | 2002-05-14 |
| Process for the preparation of 1,4-bis(aminomethyl) cyclohexane Grant 5,789,620 - Waldmann , et al. August 4, 1 | 1998-08-04 |
| Process for converting plastic waste into power Grant 5,369,947 - Dummersdorf , et al. December 6, 1 | 1994-12-06 |
| Process for the preparation of a mixture of cyclohexylamine and dicyclohexylamine using a supported noble metal catalyst Grant 5,322,965 - Immel , et al. June 21, 1 | 1994-06-21 |
| Process for the preparation of dialkyl carbonates Grant 5,233,072 - Kricsfalussy , et al. August 3, 1 | 1993-08-03 |
| Polycarbonate from special dihydroxydiphenyl bicycloalkane Grant 5,212,280 - Serini , et al. May 18, 1 | 1993-05-18 |
| Process for the preparation of diphenylamines Grant 5,196,592 - Immel , et al. March 23, 1 | 1993-03-23 |
| Process for the production of urethanes Grant 4,582,923 - Stammann , et al. April 15, 1 | 1986-04-15 |
| Process for the purification of epoxides Grant 4,369,096 - Seifert , et al. January 18, 1 | 1983-01-18 |
| Preparation of .epsilon.-caprolactone Grant 4,341,709 - Hofen , et al. July 27, 1 | 1982-07-27 |
| Process for the preparation of propylene oxide Grant RE30,945 - Prescher , et al. May 25, 1 | 1982-05-25 |
| Treating effluent with peroxide and iron Grant 4,321,143 - Wilms , et al. March 23, 1 | 1982-03-23 |
| Hydrogen peroxide treatment of effluent Grant 4,294,703 - Wilms , et al. October 13, 1 | 1981-10-13 |
| Process for the preparation of propylene oxide Grant 4,137,242 - Prescher , et al. January 30, 1 | 1979-01-30 |
| Process for the preparation of perpropionic acid solutions Grant 4,087,454 - Prescher , et al. May 2, 1 | 1978-05-02 |
| Process for the continuous preparation of percarboxylic acids in organic solutions Grant 4,087,455 - Prescher , et al. May 2, 1 | 1978-05-02 |
| Anhydrous Hydrogen Peroxide Solutions Grant 3,755,185 - Waldmann , et al. August 28, 1 | 1973-08-28 |
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